B.) 5x+9y=6
C.) 5/9x+y=2/3
D.) -5x+9y=6
Answer:
5/9x+y=2/3
Step-by-step explanation:
Answer: 14
Step-by-step explanation:
12^2+8^2=208 square root is 14
Answer:
14
Step-by-step explanation:
The value of unknown number is 7.
Here,
The expression is given as;
⇒ ( +4)+59=70
We have to find the unknown number.
What is Mathematical expression?
The combination of numbers and variables by using operations addition, subtraction, multiplication and division is called Mathematical expression.
Now,
Let the unknown number is x.
Then, The expression become;
( x + 4 ) + 59 = 70
Subtract 59 both side,
( x + 4 ) + 59 - 59 = 70 - 59
x + 4 = 11
Subtract 4 both side,
x + 4 - 4 = 11 - 4
x = 7
Hence, The value of unknown number is 7.
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